12031322122111 has 4 divisors (see below), whose sum is σ = 12031329078424. Its totient is φ = 12031315165800.

The previous prime is 12031322122103. The next prime is 12031322122123. The reversal of 12031322122111 is 11122122313021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12031322122111 - 2³ = 12031322122103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031322122811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353001 + ... + 5088541.

It is an arithmetic number, because the mean of its divisors is an integer number (3007832269606).

Almost surely, 2^{12031322122111} is an apocalyptic number.

12031322122111 is a deficient number, since it is larger than the sum of its proper divisors (6956313).

12031322122111 is an equidigital number, since it uses as much as digits as its factorization.

12031322122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6956312.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 12031322122111 its reverse (11122122313021), we get a palindrome (23153444435132).

The spelling of 12031322122111 in words is "twelve trillion, thirty-one billion, three hundred twenty-two million, one hundred twenty-two thousand, one hundred eleven".